I would like to know if it would be worth the effort to write about Tarrare, the France greatest eater, in the form of an SCP. I tought of two ways of doing this:

Making him trully anomalous. The foundation faked Tarrare's death by tuberculosis and spread fake news about his autopsy, so that people would think that he was just a guy with internal deformations, but he actually had an anomalous digestive system.

Making an explained SCP. The foundation at that time tought that he was anomalous, but after the autopsy, it was explained, similarly to SCP-1841.

What kind of story do you want to tell about Tarrare? Just taking an unusual person that already exists and saying they were actually anomalous doesn't sound like it would make a very good article because Tarrare's story has already been told.

Maybe if Tarrare was anomalous, his teeth would have continued chomping things and dissolving them even though he's dead, and need to be given something to chew on? Or there could be an exploration team still lost in his stomach somewhere? Those ideas are examples of how this could be fleshed out into more of a complete story, but they're still pretty basic, and I think you'd have to come up with something weirder/more original if you want to make this work.

I see you saw that Youtube video and all the comments/Reddit posts stating that he sounds like an SCP. Of course, that shouldn't mean he has to be because he has to be written in such a way that it isn't a rehash of him in an SCP format.

Also, Mr. Hungry already exists from the Little Misters series of Dr. Wondertainment. If you were to try to write Tarrare, you best be sure to read that to avoid having it be really similar.

To expand on fieldstone, you could have it be that Terrare's corpse is still moving and eating. Or get all horrifically Sarkic-esque with organisms that formed from his corpse (appeared as the ulcers and pus that was inside him during autopsy) that are hungry. Another route is for his condition to have formed by anomalous means that wasn't discovered until later with different people which is why there would be no known modern cases similar to Tarrare due to being covered up. The source that spawned his existence could be the SCP and just have it be that Tarrare was just the first victim.

I imagine that with "Sakic" you mean "Sarkicism", right? I did not know about that, and it seems pretty interesting. It gave me some ideas:

The Sarkicism adepts imagine Tarrare as a demigod, so they tried to resuscitate him by doing a pact with some kind of entity or using some kind of anomalous technology. Then, his already decomposed body came back to life with insatiable hunger (maybe even a greater hunger than before, as a consequence from the pact).

The anomaly is actually not Tarrare himself, but an entity that inhabits his body. Said entity could be related to Sarkicism, and it has the need of absorbing extreme quantities of mass, so it uses Tarrare for doing that. Then, after Tarrare died, this entity started wandering the world while the Foundation tried to contain it and hide its existance.

The SCP is not only one individual, but a bunch of creature/entities that posses people for the purpose of eating. Another example of this manifesting would be Charles Domery.